The Altimeter GPS Offline Altitude is a necessary app for outdoor people, including information such as geographical location, GPS, altitude, oxygen content, atmospheric pressure, and direction; It can be used when measuring and recording geographic information during travel and work, and it can also take photos with information such as height, longitude, and latitude. [Function] 1. Altitude: Display the current altitude information accurately and in real time. 2. Query altitude: View other locations to measure altitude. 3. Compass and level: Accurate and real-time display of current direction. Locator: Displays the current longitude, latitude, and address information, and displays it on the map. 5. Social sharing: You can take photos with height, longitude, latitude, and other information to share. The format of longitude and latitude is as follows: -DMS degrees, minutes, seconds hex -DD Decimal The height format is as follows: -Meters -Feet The air pressure format is as follows: - kpa - mbar - atm - mmHg -GPS does not work well indoors. -GPS accuracy depends on the receiver in your device. -Air pressure data depends on the presence or absence of air pressure sensors in your device.